diff --git a/plugins/feature/pertester/pertester.cpp b/plugins/feature/pertester/pertester.cpp
index 6b4b422a6..6a5316b07 100644
--- a/plugins/feature/pertester/pertester.cpp
+++ b/plugins/feature/pertester/pertester.cpp
@@ -189,10 +189,10 @@ void PERTester::applySettings(const PERTesterSettings& settings, const QList<QSt
 {
     qDebug() << "PERTester::applySettings:" << settings.getDebugString(settingsKeys, force) << " force: " << force;
 
-    PERTesterWorker::MsgConfigurePERTesterWorker *msg = PERTesterWorker::MsgConfigurePERTesterWorker::create(
-        settings, settingsKeys, force
-    );
     if (m_worker) {
+        PERTesterWorker::MsgConfigurePERTesterWorker *msg = PERTesterWorker::MsgConfigurePERTesterWorker::create(
+            settings, settingsKeys, force
+            );
         m_worker->getInputMessageQueue()->push(msg);
     }
 
diff --git a/plugins/feature/satellitetracker/satellitetracker.cpp b/plugins/feature/satellitetracker/satellitetracker.cpp
index e64b6a848..ce8540dd1 100644
--- a/plugins/feature/satellitetracker/satellitetracker.cpp
+++ b/plugins/feature/satellitetracker/satellitetracker.cpp
@@ -208,11 +208,10 @@ void SatelliteTracker::applySettings(const SatelliteTrackerSettings& settings, c
         tlesChanged = true;
     }
 
-    SatelliteTrackerWorker::MsgConfigureSatelliteTrackerWorker *msg = SatelliteTrackerWorker::MsgConfigureSatelliteTrackerWorker::create(
-        settings, settingsKeys, force
-    );
-
     if (m_worker) {
+        SatelliteTrackerWorker::MsgConfigureSatelliteTrackerWorker *msg = SatelliteTrackerWorker::MsgConfigureSatelliteTrackerWorker::create(
+            settings, settingsKeys, force
+        );
         m_worker->getInputMessageQueue()->push(msg);
     }
 
diff --git a/plugins/feature/startracker/startracker.cpp b/plugins/feature/startracker/startracker.cpp
index c656cb2b0..bd8185abe 100644
--- a/plugins/feature/startracker/startracker.cpp
+++ b/plugins/feature/startracker/startracker.cpp
@@ -163,9 +163,9 @@ bool StarTracker::handleMessage(const Message& cmd)
     }
     else if (MsgSetSolarFlux::match(cmd))
     {
-        MsgSetSolarFlux& msg = (MsgSetSolarFlux&) cmd;
-        m_solarFlux = msg.getFlux();
         if (m_worker) {
+            MsgSetSolarFlux& msg = (MsgSetSolarFlux&) cmd;
+            m_solarFlux = msg.getFlux();
             m_worker->getInputMessageQueue()->push(new MsgSetSolarFlux(msg));
         }
         return true;
@@ -246,10 +246,10 @@ void StarTracker::applySettings(const StarTrackerSettings& settings, const QList
         }
     }
 
-    StarTrackerWorker::MsgConfigureStarTrackerWorker *msg = StarTrackerWorker::MsgConfigureStarTrackerWorker::create(
-        settings, settingsKeys, force
-    );
     if (m_worker) {
+        StarTrackerWorker::MsgConfigureStarTrackerWorker *msg = StarTrackerWorker::MsgConfigureStarTrackerWorker::create(
+            settings, settingsKeys, force
+            );
         m_worker->getInputMessageQueue()->push(msg);
     }